how to display value (X-axis & Y-axis) of a point in graph ?

[Chanh Quang Nguyen]

I'd like to isplay value (X-axis & Y-axis) of a point in graph when moving mouse to this point ! how can i do this ? waiting for your help ! ^~^

[lmat]

On Mon, Dec 10, 2012 at 8:55 AM, Chanh Quang Nguyen nqchanh@users.sf.netwrote:

I'd like to isplay value (X-axis & Y-axis) of a point in graph when moving
mouse to this point ! how can i do this ? waiting for your help ! ^~^

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I haven't used Zed in a while, but I thought this is the default behaviour.

[justunme0805]

you have to use the pointvalue event of the zedgraph.

private string zedGraphControl1_PointValueEvent(ZedGraphControl sender, GraphPane pane, CurveItem curve, int iPt)
{
return "(" + curve.Label.Text + ") - (Sequence No. "+curve.Points[iPt].Tag.ToString()+") - Length:" + curve.Points[iPt].X.ToString() + ")-" + " (Elevation:" + curve.Points[iPt].Y.ToString() + ")";
}

Now when you move your mouse along the curve it will display the xy on the graph

[Cheng-Han,Yang]

Hi, pls help me to solve the problem

I use the code to get my x,y value in the textbox1 when the mouse hovers over a point
but i also need to get when the mouse click a point in the textbox2, I need the value of x y point to calculate from point1 to point2 distance when the mouse click point1 to point2.

I don't know how to write the code ?
pls help me !!?

zg1.PointValueEvent += new ZedGraphControl.PointValueHandler( MyPointValueHandler );

private string MyPointValueHandler( ZedGraphControl control, GraphPane pane,
                    CurveItem curve, int iPt )
    {
        // Get the PointPair that is under the mouse
        PointPair pt = curve[iPt];
        textbox1.text=pt.Y.ToString() + pt.X.ToString();
        return pt.Y.ToString() + pt.X.ToString();
    }

[Joe Pool]

Double post. Please don't do that.

[Cheng-Han,Yang]

sorry..i don't know how to delete it ><